.px2rem(@name, @px){
    @{name}: @px / 75 * 1rem;
}
*{padding: 0;margin: 0;}
li{list-style: none;}
.txh{
	display: flex;

}
.section{
	  flex:1;
	  position: relative;
	img{
		height: 100%;
		flex:1;
	}

	
}
span{
		position: absolute;
		top: 40%;
		left: 30%;
	}